- Manufacturer: Losi
- Part Number: Z-LOS-2301
- EAN: 0660132629380
- Spare Part Type: Chassis Spares
- Compatible Models: Losi 1/4 Promoto-SM FXR Supermoto Motorcycle RTR, Losi 1/4 Promoto-MX, Losi Promoto-SM FXR Supermoto Motorcycle RTR Basic
- Included Items: 1 x Front Hub Bearing Spacer, 1 x SM Rear Axle Hub V2, 2 x M4 x 16mm Button Head Screws
- Hub Version: V2
- Fastener Size: M4 x 16mm Button Head Screws
- Scale: 1/4
Overview
The Losi Rear Axle Hub, V2 and Front Bearing Spacer is an essential replacement spare part designed specifically for the Losi 1/4 scale Promoto-SM and Promoto-MX supermoto motorcycles. Whether you are maintaining your existing RC motorcycle or upgrading your fleet, this genuine Losi spare part ensures your model continues to perform at its best. As a dedicated RC hobby retailer in the UK, RC Model Shop stocks authentic Losi components to keep your RC motorcycles running smoothly on the track or at home.
This replacement part serves a critical function in the drivetrain of your Promoto-SM or Promoto-MX, providing reliable support and smooth rotation for the rear axle assembly. The V2 designation indicates this is the latest version, incorporating any improvements and refinements Losi has made to enhance durability and performance. If you have damaged your original rear axle hub or are experiencing wear in the front bearing area, this replacement kit gives you the parts you need to restore your motorcycle to factory specifications.
Losi is renowned throughout the UK RC community and beyond for manufacturing high-quality, precision-engineered RC motorcycles and components. This rear axle hub and bearing spacer combo reflects that commitment to excellence, making it the perfect choice for RC enthusiasts who demand genuine parts and reliable performance. Whether you are a competitive racer, a weekend basher, or an RC collector, keeping spare parts on hand means minimal downtime and maximum enjoyment of your Promoto-SM or Promoto-MX.
Key Features
- V2 Design — This is the latest version of the rear axle hub, meaning you benefit from any refinements and improvements Losi has implemented over previous iterations to enhance performance and longevity.
- Genuine Losi Part — As an authentic OEM component, this hub is engineered to exact specifications and tolerances, ensuring perfect fit and reliable operation with your Promoto-SM or Promoto-MX motorcycle.
- Front Bearing Spacer Included — The kit includes both the rear axle hub and a front hub bearing spacer, giving you everything needed to address multiple wear points in a single purchase.
- Complete Hardware Package — Two M4 x 16mm button head screws are provided, eliminating the need to source fasteners separately and ensuring you can complete the installation immediately.
- Direct Compatibility — This part is specifically designed for the Losi 1/4 Promoto-SM FXR Supermoto Motorcycle, with confirmed compatibility for both the RTR Battery and Charger Included version and the Basic RRP version, as well as the Promoto-MX model.
Technical Performance
The Losi Rear Axle Hub, V2 and Front Bearing Spacer represents precision engineering at its finest. Manufactured by Losi, a trusted name in RC motorcycles throughout the UK and worldwide, this component is built to withstand the demands of regular riding and racing. The rear axle hub is a critical structural element that supports the rear wheel assembly, transferring power from the drivetrain while maintaining smooth rotation and precise alignment. The included front hub bearing spacer addresses another crucial wear point, ensuring the front wheel spins freely without binding or excess play. The V2 version benefits from any design refinements Losi has incorporated, potentially including improved material composition, tighter manufacturing tolerances, or enhanced durability characteristics. The inclusion of high-quality M4 x 16mm button head screws ensures secure fastening and professional appearance. For RC motorcycle enthusiasts in the UK seeking to maintain their Promoto-SM or Promoto-MX in peak condition, this replacement part delivers authentic Losi quality and reliability.
What's in the Box
- 1 x Front Hub Bearing Spacer
- 1 x SM Rear Axle Hub (V2)
- 2 x M4 x 16mm Button Head Screws
Frequently Asked Questions
- Will this rear axle hub fit my Losi Promoto-MX or Promoto-SM? — Yes, this Z-LOS-2301 part is designed for both the Losi 1/4 Promoto-SM FXR Supermoto Motorcycle and the Losi Promoto-MX. It is compatible with the RTR versions that include battery and charger, as well as the Basic models.
- What does the V2 designation mean? — V2 indicates this is the second version of the rear axle hub design. Losi has refined and improved this component from the original version, meaning you receive the latest engineering improvements in durability, precision, and performance.
- Do I get everything I need to install this part? — Yes, the kit includes the front bearing spacer, the rear axle hub, and all necessary M4 x 16mm button head screws. You will not need to source additional fasteners to complete the installation.
- Is this a genuine Losi part? — Absolutely. This is an official Losi OEM spare part manufactured to exact specifications. Buying genuine Losi components from an authorised UK retailer ensures compatibility, reliability, and warranty protection.
- Why would I need to replace my rear axle hub? — The rear axle hub can wear or become damaged through regular use, racing, or impacts. If you notice loose handling, poor alignment, or visible damage to the hub, replacement restores your motorcycle to factory specifications and optimal performance.
- Can I use this part on other Losi models? — This component is specifically engineered for the Promoto-SM and Promoto-MX models. Always verify compatibility with your specific model before purchasing.
Why Buy from RC Model Shop?
RC Model Shop is a trusted UK RC retailer and authorised dealer for all the brands we stock, including Traxxas, ARRMA, Losi, FTX, Hobbywing, Spektrum and more. Based in Walsall, we have a physical store where customers are welcome to come in, view products and purchase in store. Whether you are a seasoned competitor, a weekend basher, or just discovering the world of RC for the first time, our team of experienced RC enthusiasts is here to help you find the perfect setup and provide ongoing support. Order the LOS Rear Axle Hub, V2 & Front Bearing Spacer: Promoto-MX/SM Z-LOS-2301 today with confidence, knowing you are buying from an authorised retailer with genuine products, expert knowledge and a commitment to customer satisfaction. Shop online or visit us in Walsall — we look forward to helping you get the most out of your RC experience.
We want to make sure your delivery goes smoothly, so here are some important details about our service:
- For orders above £120, we offer delivery to most mainland UK addresses. For orders under £120, we can still deliver to Northern Ireland and the outlying isles, as long as the item can be sent by Royal Mail, weighs less than 30kg, and fits within 61cm × 46cm × 46cm. Some highland and remote areas may carry an extra delivery charge as couriers often apply surcharges in these locations. If you live in one of these areas, feel free to contact us before ordering so we can confirm the delivery options and costs for you.
- Most of our products include delivery in the price. If your order is under £90, a small delivery fee will apply but do not worry this will always be clearly shown at checkout before you complete your purchase.
- Depending on what you choose at checkout, your order will usually be delivered either the next working day or within 2 working days. For next day delivery please place your order before 2:00pm. Orders are dispatched Monday to Friday only. Some items may take a little longer and if that is the case we will always show the expected delivery time on the product page.
- If your order includes items with different dispatch times we will normally wait and send everything together once all items are in stock. If one of the items is going to take a while we will give you the choice either wait for everything to arrive or let us send the available items now and deliver the rest later. It is up to you.
- We use trusted delivery partners to make sure your order gets to you safely and on time. We use DPD for next working day deliveries and Royal Mail for the 2 day option.
- As soon as your order is on its way we will send you a tracking number by email. If you provide your mobile number at checkout we will also send delivery updates straight to your phone so you can keep an eye on progress.
- If a product is marked as "Dispatched within 3 working days" delivery usually takes around 3 to 5 working days from when your order is placed.
- For customers in Inverness and other parts of the Scottish Highlands deliveries can take up to 2 working days even if you select next day delivery as couriers do not currently offer a guaranteed next day service to those areas.
